Summary
The remote host appears to be running psyBNC on this port.
psyBNC is an 'easy-to-use, multi-user, permanent IRC-Bouncer with many features. Some of its features include symmetric ciphering of talk and connections (Blowfish and IDEA), the possibility of linking multiple bouncers to an internal network including a shared partyline, vhost- and relay support to connected bouncers and an extensive online help system.'
The presence of this service indicates a high possibility that your server has been compromised by a remote attacker. The only sure fix is to reinstall from scratch.
Solution
Make sure the presence of this service is intended
References
Updated on 2017-03-28
